Node js tutorial step by step 13 Web Server Video Lecture | The Complete NodeJS Developer Course (in Hindi) - Back-End Programming

Ans. Node.js is a runtime environment that allows you to run JavaScript code on the server-side. It is built on Chrome's V8 JavaScript engine and provides an event-driven, non-blocking I/O model for developing scalable and efficient web applications.

Ans. Node.js uses an event-driven, non-blocking I/O model, which allows it to handle concurrent requests efficiently. It utilizes a single-threaded event loop that processes multiple requests asynchronously, without blocking the execution of other requests. This makes Node.js highly scalable and capable of handling a large number of concurrent connections.

Ans. Yes, Node.js can be used as a web server. It provides a built-in module called "http" that allows you to create an HTTP server and handle incoming requests. With the help of additional modules like Express.js, you can easily build robust and scalable web servers using Node.js.

Ans. Node.js offers several advantages for back-end programming, including: - Fast and efficient: Node.js uses the V8 JavaScript engine, which compiles JavaScript code into machine code at runtime, resulting in fast and efficient performance. - Non-blocking I/O: Node.js uses an event-driven, non-blocking I/O model, allowing it to handle concurrent requests efficiently. - Single-threaded: Node.js uses a single-threaded event loop, which simplifies programming and avoids the complexity of managing multiple threads. - Large ecosystem: Node.js has a large and active community, with a vast number of open-source libraries and modules available for various purposes, making development easier and faster. - JavaScript language: Node.js uses JavaScript, a widely-used programming language, which allows developers to leverage their existing JavaScript skills for back-end development.

Ans. Yes, Node.js is designed to handle heavy traffic and high loads efficiently. Its non-blocking I/O model and event-driven architecture make it suitable for building real-time applications and handling a large number of concurrent connections. However, it is important to properly optimize the code and handle long-running operations asynchronously to ensure the scalability and performance of Node.js applications.